00253nam a2200109Ia 4500008004100000041001200041100001900053245003800072250000900110260001600119650000800135221220s9999    xx            000 0 und d  aEnglish  aHemanshu Gupta 0aSurveillance DronecBhupash singh  a2018  aJAMMUc2018  aECE